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Ireland Launches Winter RSV Antibody Program for Infants as Quebec Reports Sharp Declines

Officials point to high uptake last season with evidence of reduced pressure on pediatric services.

Overview

  • Ireland will offer the monoclonal antibody nirsevimab in maternity hospitals to all babies born between September 1 and February 28, with doses also available to infants under six months on September 1.
  • Nirsevimab provides immediate protection lasting about 150 days and, according to the HSE, is more than 80% effective at preventing RSV-related hospitalisation in infants.
  • Last season in Ireland, almost 22,500 infants were immunised with roughly 83% uptake, alongside estimated drops of 57% in emergency presentations, 76% in hospitalisations and 65% in ICU admissions for RSV-related illness.
  • Quebec’s first seasonal campaign delivered more than 56,000 doses with nearly 75% coverage of eligible infants, which health officials said exceeded expectations.
  • A preliminary Quebec study reported over 80% effectiveness against emergency visits and hospitalisations, estimated more than 1,000 hospitalisations and over 100 ICU admissions averted, and the province plans to relaunch the program by September 30.